Nut-lock.



J. H. HARVEY.

NUT LOCK.

APPLICATION FILED JULY 31. I913.

1 144;,9790 Patented June 29, 1915.

JOSIAH H. HARVEY, OF SCRANTON, PENNSYLVANIA, ASSIGNOB 'IO REBECCA SEEN-STEIN, OF HARTFORD, CONNECTICUT.-

NUT-LOCK.

Application filed July 31, 1913.

To all whom it may concern Be it known that I, JosrAH H. HARVEY, acitizen of the United States, residing at Scranton, in the county ofLackawanna and State of Pennsylvania, have invented certain new anduseful Improvements in Nut- Locks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it appertains to make anduse the same.

This invention relates to nut locks and an object of the invention is toprovide an improved washer for a nut look so formed that a portion ofthe same may be bound against the bolt to lock the same.

A further object of the invention is to provide a nut lock washer withmeans for holding the same against movement with respect to the nut, andin further providing an improved pin which is so formed that a portionof the same may be bent around the washer to lock the pin against thewasher.

A still further object of the invention is to provide a washer so formedthat the same may be used without auxiliary locking means when thewasher is applied to any formation having an edge.

Vith these and other objects in view which will appear as thedescription proceeds, the invention resides in the combination of awasher and a split pin shaped as claimed below.

In the drawings, wherein two forms of the invention are shown: Figure 1is a front elevation of a beam having a bolt therein showing the nutlock applied thereto. Fig. 2 is a side elevation of the nut lock shownin Fig. 1. Fig. 3 is a perspective view of one form of pin which may beused. Fig. t is a front elevation of the nut lock with a modified formof pin and washer. Fig. 5 is a perspective View and Fig. 6 an edge viewof the washer; and Fig. 7 is a fragmentary detail to be referred tohereinafter.

Similar reference characters designate corresponding parts.

The general aim of this invention is to provide a nut lock having awasher designed to be interposed between the nut and the material towhich the bolt is secured or passes through, said washer having areduced leg which is shaped so as to form a substantially circularopening through which the bolt may pass, the end Specification ofLetters Patent.

under the nut as usual.

Patented June 29, 31915.

Serial No. 782,385.

of said leg forming, with an extension on the washer, a space for a keyand out of which an interference member, thereon may project to lockagainst the nut. The split pin may be in effect a cotter pin with itsclosed end bent at right angles to the rest of the pin to constitutesaid interference member or it may be of a special 0 nstruction havingthe looped end wider than the open end, but there are other forms ofpins which may be used with substantially the same results as thoseobtained by using the two forms disclosed.

Referring to the drawings, 1 represents a beam through which passes athreaded bolt 2 such as is used in railway practice, structural steel,or other arts. A nut 3 is designed to thread upon the bolt 2, the nutand bolt being of ordinary construction and forming no particular partof the present invention.

The washer forming an important part of this invention is to be mountedon the threaded end of the bolt against the beam or rail through whichthe bolt passes, and It is not necessary that the washer occupy theexact position shown in Figs. 1 and 5, but for sake of convenience Iwill describe it in such position. It comprises an upright body portiont which has an extension 5 and an opening or slot 6 formed in theportion of the body of the washer opposite the extension.

As shown in Fig. 3, the preferred form of key is a split pin whoseclosed end comprises a substantially rectangular body 10 and whose openend comprises arms 11 and 12 of lesser width than the body 10, said pinbeing constructed from a single piece and bent in the same operation toa form substantially as shown. The body 10 of this pin is designed to beof substantially the same length as the extension 5 of the washer and isof such width as to extend beyond the face of the washer into aninterference member 15.

When it is desired to apply the washer and pin as shown in Fig. 1, thewasher is slipped over the bolt 2 before the nut 3 is applied theretoand may be secured to the beam or other structure 1 by means of awasher-fastening member such as a screw 13 passing through a hole 14:formed in the body portion a of the washer, this screw 13 being engagedwith the beam in a way to prevent rotation of the washer with respect tothe said beam. The nut 3 may then be slipped on the bolt and tighteneddown onto the head of the screw 13 after which the pin as shown in Fig.3 will be applied by passing the arms 11 and 12 under the extension 5and through slot 6 until the interference member 15 of the body portion10 strikes the side of the body 4. After this the arms may be spreadapart as usual with split pins or bent about the washer, one extendingon either side of the slot 6 and locking against the washer in such away as to hold the body portion 10 within the way between extension 5and the end 9 of the washer leg. At this time the rather wide body 10extends sulficiently outward to form said interference member 15 forlocking the nut 3 in place.

The key way may have parallel sides or the end 9 may be so formed as toprovide a tapered way, see Fig. 7, the inner end of which adjacent bodyportion 4 is smaller than the outer end, so that as the pin is driveninto position said end 9 of the washer-leg will be caused to beartightly against the threads of the bolt 2, after which the arms 11 and12 may be bent around the washer. The washer is made of such material aswill allow it to bend under such pressure as will be brought to bearupon the end 9 to press it against the bolt. Of course if the washer beso placed that the upper edge 16 thereof, which is substantiallystraight, lies adjacent a protruding edge of the material (such as theflange of an I beam) through which the bolt 2 passes, the same may serveto prevent relative motion between the washer and said material, and inthis instance, there will be no need to provide the screw 13.

By referring to Fig. 4 it will be seen that this washer may be used inconjunction with a modified form of key. This is in effect a cotter pin,the closed end of which is bent forwardly into an interference member 19while its body is intended to lie within the space between the extension17, which may be of less length than the extension 5, and the inbent end9 of the washer. The split or open end of the pin passes through anopening which is here a substantially circular perforation 18 comparablewith slot 6 formed in the preferred form of the invention, the arms ofthe pin being bent around the washer in the modified form the same as inthe preferred form. The closed end of the cotter pin constituting saidinterference member 19 may be located adjacent the center of the nutwhich it is designed to lock, or it may be placed so as to prevent theturning of the nut by engaging that corner which would pass by theinterference mem ber when the nut was loosened with respect to the bolt.

As shown in Fig. 6 the end 9 of the washer may be twisted out of theplane of the body portion 4 thereof so that when the nut is drawn downagainst the same this twisted or outbent end 9 will act as a springmember to hold the nut against displacement while the key is beingapplied or even afterward. This detail might be employed if desired, ormay be omitted. In fact, the invention is susceptible of considerablemodification in its details without departing from the principleinvolved, and I reserve the right to make such changes as come withinthe scope of the claims below.

While it will probably be cheapest to stamp out the washer in the shapeshown, and to stamp out the key blank and then bend it into the shapeshown, I reserve the right to make these members by any suitable meansand of any appropriate material and size.

I claim:

1. A nut lock for a bolt comprising a washer, a leg extending from saidwasher and shaped to form a substantially circular opening through whichthe bolt passes, an extension formed on the washer, and a split pinhaving a closed end located between the extension and the bent end ofthe washer, the split ends of the pin adapted to be bent back on thewasher, and an interference member formed on said pin adapted to lockthe nut.

2. A nut lock for a bolt comprising a washer surrounding said bolt, aleg extending from said washer and shaped to form substantially acircular opening through which the bolt passes, an extension on thewasher forming with said bent leg a tapered opening, a split pin theclosed end of which forms an interference member, adapted to lie withinthe tapered opening, the open ends of said split pin adapted to be bentback against the washer, and a nut engaged by said interference member.

3. A nut lock for a bolt comprising a washer surrounding said boltcomprising a body portion, a leg extending from said body portion bentaround said bolt, an ex tension from the body portion adjacent the bentend of the leg, a split pin having an interference member adapted to liebetween the extension and the bent end of the said leg, and a nutyieldably engaged by said bent end, to hold the nut againstdisplacement.

4. A nut lock such as described, comprising a split pin having an openand a closed end shaped to form aninterference member, and a washerhaving a transverse way to receive said pin and hold said member in thepath of the nut bearing upon the washer when the open end of the pinextends beyond the edge of said washer and is bent thereupon.

5. A bolt, a nut, and a split washer having a keyway extendingcompletely through it transverse to and alongside its bolt-opening;combined with a key in said keyway having a head at one end deflectedinto an interfer ence member projecting beyond the face of the Washerand overlying the edge of the nut, the other end of the key projectingfrom the keyway and bent, for the purpose set forth.

6. A split washer, part of whose split constitutes a space transverse tothe bolt opening, the body of the washer having an open ing in line withsaid space; combined with a key whereof one end is adapted to be driventhrough said space and opening and bent, and the other end is adapted tostand in said space and has an interference member projecting beyond theface of the washer, for the purpose set forth.

7 A bolt, a nut, and a washer comprising an upright body tapered at itslower part into a leg curving around the bolt and having its outer endfree, and an extension projecting from the upper part of the body overand spaced from said end; combined with a key adapted to be driven intosaid space, the key having a member extending forward of the washer andengaging the nut.

8. A bolt, a nut, and a washer comprising a body, a resilient legprojecting therefrom and curving around the bolt with its free endflattened and its extremity standing near said body, and an extensionprojecting from the body and spaced from the flattened portion of saidleg, said body having an opening alined with such space and forming withit a transverse keyway through the washer; combined with a key adaptedto be driven into said keyway and having a member extending forward ofthe washer and engaging the nut.

9. A washer comprising an upright body having a transverse opening, anextension to one side of the body on a line above said opening, and ayielding leg depending from said body, curved to form the bolt-opening,and having its free end standing below said extension to produce a spacealined with said transverse opening, said free end being twisted out ofthe plane of the extension; combined with a key in the form of a pinwhereof one end is adapted to pass through said transverse opening whenits other end stands in said space, the last-named end having a memberprojecting forward of the washer, for the purpose set forth.

10. In a nut lock, the combination with a washer comprising a stifi bodyhaving a transverse opening, a lateral extension from the body, and ayielding leg projecting from said body, curved to form the bolt-opening,and having its free end flattened opposite said extension and producinga space tapering toward and alined with said transverse opening, saidfree end being twisted out of the plane of the extension; of a key inthe form of a split pin whose arms are adapted to pass through saidtransverse opening when its head stands in said tapered space, said headhaving a member projecting forward of the washer, for the purpose setforth.

11. A bolt, a nut, and a washer having through it a keyway transverse toits boltopening and a hole parallel with said opening; combined with awasherfastening member seated in said hole and overlaid by the nut, anda key in said keyway and hav ing a member projecting forward of thewasher and overlying the edge of the nut.

In testimony whereof I affix my signature in presence of two witnesses.

JOSIAH II. HARVEY.

Witnesses:

N. O. OMALLEY, J. A. HEALEY.

Copies of this patent may be obtained for five cents each, by addressingthe C'ommissioner of Iatents, Washington, D. C.

